co·lum·bite 
(kə-lŭmbīt′)
(kə-lŭmbīt′)n.
A black, red-brown, or colorless mineral, essentially (Fe, Mn)(Nb, Ta)2O6, the principal ore of niobium.
[COLUMB(IUM) + -ITE1.]
| 单词 | columbite |
| 释义 | co·lum·bite (kə-lŭmbīt′)n. A black, red-brown, or colorless mineral, essentially (Fe, Mn)(Nb, Ta)2O6, the principal ore of niobium. [COLUMB(IUM) + -ITE1.] |
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